7Long, M.H. 1985. A role for instruction in second language acquisition: Tasked-based language teaching[A]. In K. Hyltenstam & M. Pienemann (eds.).Modelling and Assessing Second Language Acquisition [C]. Clevedon: Multilingual Matters.
8Long, M.H. 1991. Focus on form: A design feature in language teaching methodology [A]. In K. de Bot,R. Ginsberg & C. Kramsch (eds.). Foreign Language Research in Cross-cultural Perspective [ C ].Amsterdam/Philadelphia: John Benjamins.
9Long M.H. & J.M. Norris. 2000. Task-based language teaching and assessment [A]. In M. Byram (eds.).Encyclopedia of Language Teaching [C]. London:Routledge.
10Long, M.H. & P. Robinson. 1998. Focus on form:Theory, research, and practice [A]. In G. Doughty & J. Williams (eds.). Focus on Form in Classroom Second Language Acquisition [ C ]. Cambridge:Cambridge University Press.